A compound sentence consists of two or more simple sentences, grammatically independent of one another and generally united by a coördinating conjunction. Thus, τῇ δὲ ὑστεραίᾳ ἐπορεύοντο διὰ τοῦ πεδίου καὶ Τισσαφέρνης εἵπετοbut on the next day they proceeded through the plain and Tissaphernes kept following themX.A. 3.4.18.

a. Abbreviated compound sentences, i.e. sentences containing a compound subject with a single verbal predicate or a single subject with a compound verbal predicate, are treated in this book as expanded simple sentences ( cross923, cross924).